Why would my car's rpms run high then return to normal after filling car with transmission fluid but then the speedometer stopped working?


Asked by Jun 06, 2015 at 11:05 PM about the 1997 Oldsmobile Cutlass Supreme 2 Dr SL Coupe

Question type: Maintenance & Repair

I started to accelerate and noticed that rpms were running high.  Returned home and
looked at transmission fluid.  It was low so I filled it to level needed.  Test drove it and it
started getting back to normal.  Parked it and then later in the day, started driving it and
rpms were high again and now speedometer doesn't want to work.

3 Answers


Sounds like the speed sensor was sending erratic signals to the ECM at first, causing you RPM problem, it cooled off some for your test, but then went away completely, just a guess but I have seen this before, so get the codes pulled to be sure.


If the codes are inconclusive the next stop needs to be a transmission shop for a diagnosis. My '03 Grand Prix did something similar a few years back and very shortly thereafter the transmission pretty much self destructed. The damage may already be done in yours, but you don't want to be left stranded.

Claude Masson

sugest u take it out of nutral,

Your Answer

Add photo

Related Questions

Cutlass Supreme

Looking for a Used Cutlass Supreme in your area?

CarGurus has 143 nationwide Cutlass Supreme listings and the tools to find you a great deal.


Search Oldsmobile Cutlass Supreme Questions

Oldsmobile Cutlass Supreme Experts

#1 munron
Reputation 540
#2 tennisshoes
Reputation 350
#3 Tom Demyan
Tom Demyan
Reputation 310
View All

Related Models For Sale

Used Chevrolet Monte Carlo"
12 Great Deals out of 2,062 listings starting at $2,000
Used Buick Regal"
189 Great Deals out of 10,670 listings starting at $2,195
Used Chevrolet Impala"
938 Great Deals out of 35,697 listings starting at $1,500
Used Chevrolet Caprice"
204 listings starting at $10,900
Used Ford Mustang"
737 Great Deals out of 41,065 listings starting at $900
Used Chevrolet Malibu"
1,151 Great Deals out of 73,044 listings starting at $695
Used Pontiac Grand Prix"
30 Great Deals out of 4,355 listings starting at $1,995
Used Chevrolet Camaro"
799 Great Deals out of 38,852 listings starting at $2,650
Used Pontiac Firebird"
9 Great Deals out of 904 listings starting at $2,900
Used Buick LeSabre"
19 Great Deals out of 2,612 listings starting at $1,950
Used Pontiac Bonneville"
3 Great Deals out of 859 listings starting at $2,950